And if you want diagnostic mode press and hold enter while turning ignition on
GOLD Level Holden Technician.
Worked for me:
Press and hold the trip button on the steering wheel.
Turn the ignition to ON.
Release trip button.
Press and hold the ‘Enter’ Button until a confirmation beep is heard.
Turn the ignition to OFF.
I've done the service quite early on my car, does this step reset the interval now. It doesn't seem to give me any signs it has reset
Bit of a silly system, thanks anyway 😉